Rubiaceae
Nauclea

Nauclea diderrichii (De Wild.) Merr.

First published in J. Washington Acad. Sci. 5: 535 (1915)
This species is accepted
The native range of this species is W. Tropical Africa to Uganda. It is a tree and grows primarily in the wet tropical biome.

Descriptions

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: not threatened. Confidence: confident
[AERP]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/33058/110069320

Conservation
NT - near threatened
[IUCN]

Rubiaceae, B. Verdcourt. Flora of Tropical East Africa. 1976

Morphology General Habit
Tall rather slender forest tree (9–)30–40 m. tall, with bole attaining 0.9–1.5 m. in diameter, with low or without buttresses; branchlets glabrous; bark light brown, greyish or yellowish, shallowly and longitudinally fissured; slash fibrous, white, turning pale brown.
Morphology Leaves
Leaf-blades broadly elliptic, (4–)7–18(–40) cm. long, (2.5–)4–12(–18) cm. wide (even up to 45 × 21 cm. on sterile shoots), obtuse or very slightly acuminate at the apex, rounded or shortly cuneate at the base, glabrous; petiole 0.8–1.3(–1.8) cm. long; stipules large; foliaceous, oblong-elliptic, 1–2.5(–7) cm. long, 0.4–1.2(–6.8) cm. wide, with a very distinct narrow keel, glabrous.
Morphology Reproductive morphology Inflorescences
Inflorescences terminal, 3 cm. in diameter; peduncle short, 1.1–2 cm. long.
Morphology Reproductive morphology Flowers Calyx
Calyx-lobes prismatic or clavate, very short, 1.8–2 mm. long, the lobes unequally joined amongst themselves, thickened and hairy at the tips.
Morphology Reproductive morphology Flowers Corolla
Corolla white, greenish white or yellowish, (4–)6–8 mm. long, the tube narrowly funnel-shaped; lobes 3–4, oblong-elliptic, 1.5–2.7 mm. long, 0.75–1.2 mm. wide.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Style 1.1–1.3 cm. long, exserted 4.5–6 mm. from the corolla; stigma 2 mm. long, acuminate.
Morphology Reproductive morphology Fruits
Syncarps globose, greyish brown, with whitish flesh, 3–4 cm. in diameter, subechinate and ornamented with a disconnected network of unequallyjoined calyx-lobes surrounding the floral pits.
Morphology Reproductive morphology Seeds
Seeds brown, ovoid, 1 mm. long, not margined, reticulate.
Figures
Fig. 61.
Habitat
Evergreen forest; 840–1650 m.
Distribution
U2 W. Africa
[FTEA]

Rubiaceae, F. N. Hepper & R. W. J. Keay. Flora of West Tropical Africa 2. 1963

Morphology General Habit
Tree 30-130 ft. high, with clear bole and low buttresses.
[FWTA]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • Flora of Tropical East Africa

    • Flora of Tropical East Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Flora of West Tropical Africa

    • Flora of West Tropical Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

  • IUCN Categories

    • IUCN Red List of Threatened Species
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0